| Acronym | Meaning |
 | GHA | Greenwich Hour Angle |
| LESS | Leading Edge Structure Subsystem |
| CIR | Cargo Integration Review |
| FOR | Flight Operations Review |
| TOPS | Transistorized Operational Phone System |
| SCAS | Subsystem COMPuter Application Software |
| NOCC | Network Operations Control Center (GSFC) |
| ORR | Operations Requirements Review |
| FMT | FlightManagementTeam |
| MLP | Mobile Launch (Launcher) Platform |
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